Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 585 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.108 × 108 =
2. 2.1020 × 1029 =
3. 3.7 × 8 =
4. 4.104 × 106 =
5. 5.103 × 105 =
6. 6.7 × 7 =
7. 7.979 × 990 =
8. 8.980 × 979 =
9. 9.1037 × 973 =
10. 10.114 × 103 =
11. 11.110 × 113 =
12. 12.7 × 9 =
13. 13.7 × 8 =
14. 14.14 × 9 =
15. 15.11 × 11 =
16. 16.113 × 102 =
17. 17.14 × 14 =
18. 18.14 × 6 =
19. 19.13 × 14 =
20. 20.986 × 969 =
21. 21.6 × 7 =
22. 22.114 × 96 =
23. 23.14 × 6 =
24. 24.112 × 89 =
25. 25.97 × 89 =
26. 26.114 × 91 =
27. 27.963 × 975 =
28. 28.969 × 999 =
29. 29.90 × 89 =
30. 30.14 × 11 =
31. 31.112 × 108 =
32. 32.977 × 972 =
33. 33.98 × 85 =
34. 34.102 × 96 =
35. 35.9 × 6 =
36. 36.101 × 86 =
37. 37.112 × 87 =
38. 38.95 × 98 =
39. 39.112 × 88 =
40. 40.95 × 91 =

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